Advise on Speakers Please


HI TO ALL AUDIOGONERS.
I OWN A PAIR OF ROGUE AUDIO MONOBLOCKS M 150(JUST BOUGHT THEM) .THEY ARE USING 4(KT88),2(12AU7),1(12AX7) PER CHANNEL. LINE STAGE IS AUDIO RESEARCH LS3B BUT CONSIDERING THE ROGUE AUDIO MUGNUM 99. WHAT WOULD BE A GREAT MATCH OF SPEAKERS WITH THESE AMPS?
I WAS TOLD THE VANDERSTEEN'S ARE A GOOD CHOICE, PLEASE LET ME KNOW, YOUR OPINIONS ARE GREATLY APPRECIATED.
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